Refactor track adjustment removal into a helper method

[google-labs-jules]

This PR introduces a new extension method RemoveAllAdjustments() for IAdjustableAudioComponent to simplify clearing all standard audio adjustments (Balance, Frequency, Tempo, Volume). The repetitive calls in MusicController.ResetTrackAdjustments have been replaced with this new helper.

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PR created automatically by Jules for task 4071461948145277898 started by @winnerspiros

[google-labs-jules]

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